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Vinu Patel

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454. selvasundaram balasubramanian 1
455. chris fox 1
456. Vinu Patel 1
457. Lasith Premathilaka 1
458. Matti Ovitt 1
last 3 solved tasks
What 5-digit number satisfies the following requirements? 1. No zeroes; 2. First two digits are the same; 3. Fourth digit is twice the first; 4. Last digit is twice the third; 5. Sum of all digits is 18

Robert Mayer

Died 20 Mar 1878 at age 63 (born 25 Nov 1814). Julius Robert Mayer was a German physicist who, while a ship's doctor sailing to Java, considered the physics of animal heat. In 1842, he measured the mechanical equivalent of heat. His experiment compared the work done by a horse powering a mechanism which stirred paper pulp in a caldron with the temperature rise in the pulp. He held that solar energy was the ultimate source of all energy on earth, both living and nonliving. Mayer had the idea of the conservation of energy before either Joule or Helmholtz. The prominence of these two scientists, however, diminished credit for Mayer's earlier insights. James Joule presented his own value for the mechanical equivalent of heat. Helmhotlz more systematically presented the law of conservation of energy.

Two men are out ice fishing at...

Two men are out ice fishing at their favourite fishing hole, just fishing quietly and drinking beer. Almost silently, so as not to scare the fish, Rick says, "I think I'm going to divorce my wife - she hasn't spoken to me in over 2 months."
Dave continues slowly sipping his beer, then thoughtfully says, "You better think it over - women like that are hard to find."
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